The Stovebolt Site Forums The Shop Area Driveline New ring gear/pinion contact pattern -look ok?

How do these contact patterns look? I want to get oppinions before I reinstall the third member.

Drive pattern

Coast pattern

You got it David. Looks like they're making contact right down
the center, couldn't get much better than that, it's just where
you want it to be.
What rear end is it that you're working on? Sounds like you have
an open rearend installed in your '52.
Denny Graham
Somewhere north of Sandwich, IL

Thanks Denny. It is the stock closed rearend out of the '52. I just installed new ring and pinnion from Patricks. Good thing I did as the main (double row, front) pinnion bearing lost the ball retainers and it got chewed up along the way. I think I will go ahead and bolt in the third member now and call it a day.

Update: I emailed the photos to Patrick for a second opinnion. He almost immediately called me on the phone and asked the details on how I set up the gears. He discovered that I loaded the ring/pinion backwards when producing the contact pattern and had me redo it properly. Provide resistance on ring gear and turn driveshaft (I did it backwards). The new contact pattern was slightly different and I emailed them to Patrick. Again, he almost immediately called back and said bolt her up and go drive. I wish it was that easy...truck is probably 12 months away from the first drive. Oh well, at least I can finish up the rear end with confidence. Patricks is a top notch vendor and very willing to help. Highly recommended in my book.